53. A firefighter of mass 80 kg slides down a vertical pole
with an acceleration of 4 m/s². Show that the friction
force that acts on the firefighter is 480 N.
PLEASE SHOW STEP BY STEP

Answer is given below:

Explanation:

Given Data:

mass = 80kg

acceleration = 4 ms

force = 800N

Find out:

friction = ?

Formula:

F-friction = weight - f-net

Solution:

weight = (80)(10)

           = 800 N

F-net = ma =(80)(4) = 320N

F-friction = weight - F-net

               =800 N - 320N

               =480N

Answer :

Friction = 480 N

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.